Establishing communication pathways between infrastructure devices in a group communication system implemented over a wide area network
Active Publication Date: 2010-02-04
MOTOROLA SOLUTIONS INC
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Problems solved by technology
The recurring costs of the leased communication lines, as well as the capital investment required to deploy multiple radio repeater infrastructure devices and a specialized call control server can result in relatively high system costs.
Professional and commercial entities, such as retail store chains, school systems, utilities companies, transportation companies and generation companies, can also benefit from the use of multi-site land mobile radio systems but, due to the recurring costs and the required capital investment, such entities generally do not deploy such systems.
Moreover, such a system would require multiple central call servers, which themselves would need to be connected over separate leased lines, thus creating significant additional operational expenses.
The MIP architecture works well for non-real time data, but encounters problems when used for real time data and voice data due to relatively long latency.
These characteristics of the MIP can result in considerable reconnection time, longer roaming delays and increased latency.
The amount of packet loss can make the MIP unsuitable for use in wide area networks such as those described above.
Moreover, the performance of MIP is poor when used for low-latency group voice calls, where there are multiple destinations that are potentially mobile and can be at any site that is part of the network.
With this approach, the number of hops the group message packet must traverse when going from the source WCD 4 to the destination WCDs 6, 8 is significant and can incur significant throughput delay.
This can be problematic when the group message packet is audio or voice since the greater the perceived listening throughput delay the worse the audio quality.
Method used
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Embodiment Construction
[0023]Embodiments of the present invention generally relate to a method for establishing communication pathways between infrastructure devices in a wide area communication network. In one implementation, the infrastructure devices can include a home infrastructure device of a source wireless communication device (WCD), a first infrastructure device and a second infrastructure device. A home steward module of the source WCD generate a destination WCD distribution list, and communicates the destination WCD distribution list to an envoy packet duplicator module located at the first infrastructure device. The distribution list is for communications from the source WCD to a first communication group that also includes, for example, a first destination WCD. A first network socket of the envoy packet duplicator module is communicated from the home steward module to a second envoy module for the first destination WCD is located at the second infrastructure device. The home steward module ge...
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A method and apparatus is provided for establishing communication pathways between infrastructure devices in a wide area communication network prior to transmission of a group message packet by a source wireless communication device (WCD). In one implementation, the infrastructure devices (IDs) can include a home ID of the source WCD, a first ID and a second ID. A home steward module (HSM) of the source WCD generates a distribution list (DL) for communications from the source WCD to a first communication group (CG), and communicates it to an envoy packet duplicator module (EPDM) located at the first ID. The first CG includes, for example, a first destination WCD. A first network socket of the EPDM is communicated from the HSM to a second envoy module (located at the second ID) for the first destination WCD. The HSM maps a second network socket for the second envoy module to an identifier of the first destination WCD, and communicates this mapping to the EPDM. A first communication connection can then be established between the first network socket and the second network socket.
Description
FIELD OF THE DISCLOSURE[0001]The present disclosure relates generally to wide area communication networks and more particularly to methods and apparatus for wireless communications implemented over a wide area network.BACKGROUND[0002]Multi-site land mobile radio systems typically utilize leased communication lines to interconnect radio repeater infrastructure devices with a central call control server. The recurring costs of the leased communication lines, as well as the capital investment required to deploy multiple radio repeater infrastructure devices and a specialized call control server can result in relatively high system costs. Multi-site land mobile radio systems are primarily utilized to provide emergency communications to police officers, fire fighters and other emergency responders.[0003]Professional and commercial entities, such as retail store chains, school systems, utilities companies, transportation companies and generation companies, can also benefit from the use of...
Claims
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Login to View More IPC IPC(8): H04L12/28
CPCH04W8/06H04W80/04H04L12/189H04L12/1895H04W72/005H04W84/08H04W8/186H04W72/30
InventorLOGALBO, ROBERT D.HIBEN, BRADLEY M.
OwnerMOTOROLA SOLUTIONS INC